Gas-lamp.



Patented Nov. 25, I902.

T. BBABSDN.

GAS LAMP.

Application filed Dee. is, 1901. (No Model.)

F/G. 7. I 6 Z V .INVENTOR:

By A t/omeys,

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UNITED STATES PATENT OFFICE- TOM BRABSON, OF BROOKLYN, NEW YORK,ASSIGNOR TO BRABSON LAMP AND MANUFACTURING COMPANY, OF BROOKLYN, NEWYORK, A COR- PORATION OF NEW YORK.

GAS-LAM P.

SPECIFICATION forming part of Letters Patent 0. 714,444, dated November25, 1902.

Application filed December 18,1901. Serial No. 86,380. (No model.)

To all whom it may concern: connection-with a hollow member O, having Beit known that I, TOM BRABSON, a citizen branches D preferably separatedfrom each of the United States, residing in the borough other, so as toavoid as much as possible any of Brooklyn, county of Kings, city andState obstruction to the admissionof air from beof New York,"haveinvented certain new and low. A horizontal seat is formed at the lower55 useful Improvements in Gas-Lamps, of which end of the supply-pipe,preferably by means the following is a specification. of a diaphragm E,forming part of the mem- 7 My invention aims to provide certain imher 0and located above the passages in the provements in gas-lamps especiallyadapted branches D. The member 0 has also a short 10110 multiple-burnerincandescent gas-lam ps, portion F extending downward below the 60whereby they are rendered compact and simbranches D, so as to form achamber for the ple in construction and durable in operation, valve G,so as to permit a direct and substanand the several parts are madeconvenientof tially unobstructed flow when the valve is access forinspection or removal, and Whereopen. To this chamber is connected amemby various other advantages in detail are seber H, having ahorizontal valve seat upon- 65 cured, as hereinafter specified. whichisa packing-ringJ ofany suitable mate- Referring to the accompanyingdrawings, rial covering the joint between the members illustrating anembodiment of my invention, Hand'O and having alsoachamber K, formingFigure 1 shows the same in side elevation adirt-receptacle,belowsaidvalve-seat. The with the pilot-burner thereof in section. Fig.operating-rod L screwsthrough the lower por- 7o 2 is a vertical sectionon the line 2 2 of Fig. tion of said member H, and said member is 3.Fig. 3 is ahorizontal section approximately provided with wrench-"faces,Fig. l, for screw- .throughthe mixing or Bunsen tubes near ing ittightly in place. A button M or hantheir lower ends. dle of any sort isattached to the end of the My improvements are illustrated as appliedoperating-rodL, and by turning this the valve 75 to a multiple burner,such as is commonly is moved upward, so that its upper facebears used inshops or other public places for givagainst the seat E to cut off thesupply or is ing a large quantity of light. In such places moveddownward into the chamber F to adit is generallyvery desirable or evennecesmit a full supply to the branches and so that sary to savehead-room by making the entire its lower face bears against thepacking-ring 8o lamp as short as possible. By a very com- J to preventescape of gas along the rod. pact arrangement of the supply-pipe and theUnder the intense heat to which the central individual burners and theoperating parts supply-pipe is exposed there is sometimes a I havesucceeded in producing an extremely considerable formation of scalewithin the 1 3 5 short lamp. According to the preferred arpipe, whichdrops into the valves as pre- 85 rangement theimain supply-pipe A of myviously constructed. There is also a certain lamp is arranged centrallyof-a group-comamount of solid matter in the gas. These prisingin thepresent case four-of individual and possibly other foreign matters oftenclog burners B. I preferably extend the main the valves of supply-pipesafter the lamps o supply-pipe A downward from any suitable have been inuse for a time. In connection 0 point of support and connectthe'individual with my improved valve I use a spider N, burnerstherewith by branches radiating from which moves in the port of thevalve as the its lower end, so that it does not extend belatter isoperated, as indicated by the dotted low the lamp at all. The valve forcutting lines in Fig. 2. When the valve is operated off or turning onthe supply may be convenin the manner explained, the spider end not 95iently located immediately at the lower end only reciprocates in theport, but rotates of the supply-pipe and preferably has a short thereinalso, and the sharp edges thereof keep downwardlyextending operatingrod.As the port entirely clear of dirt. Any foreign illustrated, thesupply-pipe A is connected matter passing down into the branches D or atits lower end-as, for example, bya screw the chambers F and K can bequickly re- Ioo moved by unscrewing the member II. This construction istherefore not only compact and simple and therefore cheap, but is mostconvenient in the keeping of the lamp in good order. I preferably alsoscrew a nut O on the tubular extension of the nut H. A washer O preventsleakage in intermediate positions. It is to be noted also that with thevalve arranged at a point considerably below the mantles and directly inthe path of the cool air which is admitted to the lamp I avoid excessiveheating of the valve, which has been a frequent cause of injury inprevious constructions in which the valve is located higher up in thesupply-pipe and nearer to the mantles.

Ipreferably use a continually-lighted pilotjet P, comprising avertically-arranged pipe connected in any suitable way with thesupply-pipe A, and I add to the convenience of control of my burner byproviding the valve Q thereof with an operating-rod R, extendingdownward, as indicated in Fig. 2, to a point below the burner, so as tobe convenientof operation at alltimes. I have also improved the means ofholding the shade or globe which surrounds the burner by the use ofshade-holders S, which are movably connected to the several branches D,whereby they can be moved outward to support the shade or inward to passwithin the opening of the shade as it is put in place or removed. Theseshade-holders are preferably single arms having upward extensions attheir outer ends and pivoted at their inner ends on the under sides ofthe several branches D by means of a pivot T, screwing into a boss U,formed on the under side of the branch for this purpose. This forms avery simple connection, and the parts are so proportioned that theholders S when swung horizontally inward occupy the very compactposition shown in dotted lines in Fig. 3 and when swung outward extendoutside of the shade, so as to support the same, as illustrated in Fig.2. As indicated in Fig. 3, the lower part of the burner when in actualuse with the shade in place comprises onlya series of narrow armsradiating from the center and presenting the least possible resist-'ance to the admission of air from below. The supporting of the mantle isalso accomplished in a very simple and durable manner in my improvedlamp. For this purpose I preferably provide a support attached directlyto the central downwardly-extending supplypipe at a point above themantles and adj ustable in height on such pipe. From this support Isuspend hooks, which have their lower ends adapted to engage themantles. The mantle-support V is preferably a casting fitting looselyover the pipe and adjusted and held in position by means of a set-screw\/V and having arms X extending toward the several mantles. Each ofthese arms has a vertical aperture Y, and each of the hooks Z has a benda at its upper end adapted to pass downward into the aperture Y.Preferably also each arm X hasa radial notch 12 in its end, in which theshank of the hook Z rests so as to prevent lateral movement thereof. Theheat to which such a mantle-holderis subjected and the expansion andcontraction of the metal often result in a loosening of the connectionof the holder with the supply-pipe, and after the lamp has been in usefor some time the mantle-holder slips on the pipe and breaks themantles. In order to certainly avoid this trouble, I provide inconnection with mantlesupports of this general type a fixed stop on thepipe whose upper edge is in contact with or immediately below themantle-support and which, in case of the accidental loosening of thesupport, prevents the same from falling far enough to injure themantles. This fixed stop may be very simply made in the form of a sleeve0, whose lower edge rests on the horizontal branch of the pilot-burneror on any other fixed point of the burner and whose upper edge is closeto the lower edge of the mantle-support V. I also provide certainimprovements in detail in the individual mixing-tubes of the severalburners,whereby their construction is cheapened and strength ened andthe operation improved. To stand the intense heat which occurs, thesetubes must he made of considerable solidity, and I make them,preferably, of a single tube (31. of cast brass, in the lower end ofwhich is fitted a gas-nozzle e, which in turn is connected to theupwardly-extending portion of the branch D. The lower end f of the tubewhich constitutes the chamber in which the nozzle 6 is placed issomewhat enlarged, and openings at the side for admission of air areformed by a straight out directly across the side of the tube, asindicated at the left of Fig. 1. vides space for the admission of ampleair. The upper end of the tube is enlarged, as shown at g, and a sheetof wire-gauze or the like h is held on the top thereof by means of a capj. In order to press the flame outward against the mantle 7:, Ipreferably use a spreader, which is connected to the center of the sheetof gauze h and extends downwardly therefrom, so as to spread thecombustible mixture outward. The spreader is durably and cheaplyconstructed and connected to the gauze in the following manner: A plateZ of the desired diameter is pressed against the underside of the gauzeby means of a shoulder on a tube m, the upper end of which tube isextended through the gauze and swaged outward at its outer end,preferably over a washer 12.

Though I have described with great particularity of detail a lampembodying my invention, yet it is to be understood that my invention isnot limited to the specific device shown and described.

Various modifications in the details and in the arrangement andcombination of parts One of these cuts on each side promay be madewithout departure from the invention.

What I claim is 1. In an incandescentgas-burner, the comattached to theupper part of said pipe, and.

a fixed stop held on said pipe with its upper edge immediately below themantle-support whereby to prevent said support from falling, said fixedstop comprisinga'sleeve surrounding said supply-pipe and supported onone of said branches.

2. In an incandescent gas-burner, the combination with adownwardly-extending supply-pipe, of branches connected to the lowerpart of said supply-pipe, a mantle-support fitting around the upper partof said pipe and adjustable in height thereon, and a fixed stop held onsaid pipe with its upper edge immediately below the mantle-supportwhereby to prevent said support from falling.

3. In an incandescent gas-burner, the combination with adownwardly-extending supply-pipe, of branches connected to the lowerpart of said supply-pipe, a mantle-support on the upper part of saidpipe, and a stop fixed on said pipe at a point thereof above saidbranches and in position to prevent said support from falling, said stopcomprisingasleeve surrounding said supply-pipe and supported on one ofsaid branches.

4. In an incandescent gas-burner, the combination with a mantle-supportV having an arm X extending over the mantle and having a verticalaperture Y, of a hook Z having its lower end adapted to engage a mantleand having a bent portion aat its upper end passing downward into saidaperture.

5. In a multiple incandescent gas-burner, the combination with a groupof burners, of a central main supply-pipe, a mantle-support V attacheddirectly to said pipe and comprising arms X extending over said burnersand having each a vertical aperture Y, and hooks Z having their lowerends adapted to engage a mantle and having bends a at their upper endsadapted to pass downward into said apertures.

6. In an incandescent gas-burner, the combination with a mantle-supportV having an arm X extending over the mantle, having a vertical apertureY and having a radial notch b in its end, of a hook Z having its lowerend adapted to engage a mantle and having a bent portion a at its upperend passing downward into said aperture, and a vertical shank lying insaid notch.

7. In a gas-burner, a supply-pipe, a valve at the lower end of saidsupply-pipe, a valveseat above said valve through which gas is admittedfrom said supply-pipe, a valve-seat below said valve and against whichthe lower face of said valve bears when open to avoid escape of gas, anda chamber K below the lower of said seats adapted to formadirt-receptacle and to keep said valve free.

In witness whereof I have hereunto signed my name in the presence of twosubscribing witnesses.

TOM BRABSON.

Witnesses:

THOMAS F. WALLACE, FRED WHITE.

